US 12,081,071 B2
Electric motor and pump comprising such an electric motor
Nico Wießmann, Kitzingen (DE); Peter Sudermann, Schwarzenau (DE); Stephan Roos, Wertheim-Höhefeld (DE); and Alexander Volkamer, Oberscheinfeld (DE)
Assigned to Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg, (DE)
Appl. No. 17/261,798
Filed by Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg, Würzburg (DE)
PCT Filed Jul. 2, 2019, PCT No. PCT/EP2019/067677
§ 371(c)(1), (2) Date Jan. 20, 2021,
PCT Pub. No. WO2020/015999, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 10 2018 212 145.1 (DE), filed on Jul. 20, 2018.
Prior Publication US 2021/0265878 A1, Aug. 26, 2021
Int. Cl. H02K 1/18 (2006.01); B60R 17/02 (2006.01); F04D 13/06 (2006.01); F04D 29/18 (2006.01); F16B 25/00 (2006.01); H02K 21/16 (2006.01)
CPC H02K 1/185 (2013.01) [B60R 17/02 (2013.01); F04D 13/06 (2013.01); F04D 29/18 (2013.01); F16B 25/0036 (2013.01); H02K 21/16 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An electric motor for use in an oil pump, the electric motor comprising:
a rotor;
a stator defining a number of lead-through apertures each continuously extending along an axial direction and forming an end face arranged with respect to the axial direction;
a number of screw elements; and
a function carrier disposed on the end face, defining a number of screw receivers each extending along the axial direction, and provided with a contact contour configured to engage the stator, wherein the number of lead-through apertures receive the number of screw receivers and the number of screw receivers receive the number of screw elements; and
a first and second centering pair, provided for centering the function carrier on the stator, the first centering pair having a first lead-through aperture of the number of lead-through apertures and a first screw receiver of the number of screw receivers, the second centering pair having a second lead-through aperture of the number of lead-through apertures and a second screw receiver of the number of screw receivers;
wherein the first screw receiver and the first lead-through aperture have mutually corresponding circular cross-sections, wherein one of the second lead-through aperture and the second screw receiver has a circular cross-section, and the other of the second lead-through aperture and the second screw receiver has a substantially rectangular, oval, arc-shaped or sword-shaped cross-section, and wherein the second screw receiver is spaced in a radial direction perpendicular to the axial direction from an inner wall of the second lead-through aperture and is seated on the inner wall of the second lead-through aperture in a circumferential direction.